论文部分内容阅读
在酸性介质中，非离子表面活性剂聚乙烯醇存在下，用罗丹明B－锗钼蓝离子缔合物水相分光光度法测定食品、中药中的微量锗。缔合物最大吸收波长为580nm，摩尔吸收系数为1．02×105mol·L－1·cm－1，0～0．40mg·L－1锗满足比尔定律。方法精密度为5．9％，回收率为95％～105％。
Determination of micro germanium in food and Chinese medicine by aqueous phase spectrophotometry with rhodamine B-germanium molybdenum blue ion complex in acidic medium in the presence of non-ionic surfactant polyvinyl alcohol. The maximum absorption wavelength of association compounds is 580nm, and the molar absorption coefficient is 1.02 × 105mol·L-1 · cm-1, 0 ~ 0.40mg · L-1. The law of germanium satisfies Beer’s law. The precision of the method was 5.9% and the recovery rate was 95% ~ 105%.